{"id":132373,"date":"2014-12-02T08:29:41","date_gmt":"2014-12-02T07:29:41","guid":{"rendered":"http:\/\/www.madrimasd.org\/blogs\/energiasalternativas\/?p=132373"},"modified":"2014-12-02T08:29:41","modified_gmt":"2014-12-02T07:29:41","slug":"100-wh-multi-purpose-particle-reactor-for-thermochemical-heat-storage-experimental-work","status":"publish","type":"post","link":"https:\/\/www.madrimasd.org\/blogs\/energiasalternativas\/2014\/12\/02\/132373","title":{"rendered":"100-Wh multi-purpose particle reactor for thermochemical heat storage: Experimental work"},"content":{"rendered":"

Thermochemical energy storage (TCS) is a promising technology to improve the energy generation dispatchability and enhance the overall efficiency of the Concentrating Solar Power (CSP) Plants. In the frame of the European FP7 TCS Power Project; we have developed a work bench to evaluate at lab-scale, the potential of metal oxides as storing material for CSP Plants based on the technology of volumetric air receiver.<\/span><\/p>\n

\u00a0\"\"<\/a><\/span><\/p>\n

Figure 1.- CSP Plant with TCS layout.<\/span><\/p>\n

For the high temperatures achievable in volumetric air receiver, the chemical material chosen is manganese oxide. Charging process occurs at 880-1050\u00baC, while discharging takes place between 520-650\u00baC.<\/span><\/p>\n

Charge<\/span>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/span>3 Mn<\/span>2<\/span><\/sub>O<\/span>3<\/span><\/sub> (s) + <\/span><\/span>D<\/span>H<\/span>R<\/span><\/sub>\u00a0 <\/span>\u2192<\/span>\u00a0 <\/span>2 Mn<\/span>3<\/span><\/sub>O<\/span>4<\/span><\/sub> (s) + 1\/2 O<\/span>2<\/span><\/sub> (g)<\/span><\/span><\/p>\n

Discharge<\/span>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/span>2 Mn<\/span>3<\/span><\/sub>O<\/span>4<\/span><\/sub> (s) + 1\/2 O<\/span>2<\/span><\/sub> (g)<\/span>\u00a0 <\/span>\u2192<\/span>\u00a0 <\/span>3 Mn<\/span>2<\/span><\/sub>O<\/span>3<\/span><\/sub> (s) + <\/span><\/span>D<\/span>H<\/span>R<\/span><\/sub><\/span><\/p>\n

The developed work bench is able to operate with air flow rates up to 60 m<\/span>3<\/span><\/sup>\/h at a maximum temperature of 1000\u00baC. It is composed of different subsystems: dried air compressor, flow meters, air heaters, reactor, control system and hot gases exhaust.<\/span><\/span><\/p>\n

\u00a0\"\"<\/a><\/span><\/p>\n

Figure 2.- TCS work bench.<\/span><\/p>\n

Several experiments have been performed in order to characterize the manganese oxide; from the power material to the pelletized form. We have analysed thermal diffusivity, density, hardness, ciclability under different heating rates and gases, kinetics and structural changes over the thermal treatments.<\/span><\/p>\n

Nowadays, the experiments are in progress in the work bench and by the end of the project we would have assessed the manganese oxide potential for TCS applications.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

Thermochemical energy storage (TCS) is a promising technology to improve the energy generation dispatchability and enhance the overall efficiency of the Concentrating Solar Power (CSP) Plants. In the frame of the European FP7 TCS Power Project; we have developed a work bench to evaluate at lab-scale, the potential of metal oxides as storing material for CSP Plants based on the technology of volumetric air receiver. \u00a0 Figure 1.- CSP Plant with TCS layout. For the high temperatures achievable in volumetric air receiver, the chemical material chosen is manganese oxide. Charging process occurs at 880-1050\u00baC, while discharging takes place between 520-650\u00baC.\u2026<\/p>\n","protected":false},"author":29,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0},"categories":[1784,543,1],"tags":[],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":4}},"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t